Sony has been one of the more reliable brands when it comes to supporting its old devices, but until now it didn't have an official policy on how long support lasts. So, here's a bit of clarity and piece of mind. Sony commits to upgrading its all of its premium devices to the latest Android version for two years after launch. These top devices all participate in the Security Update Program too, to patch security risks and vulnerabilities. Mid-range and entry-level devices don't get a set period of support. If the company decides the hardware can't deliver "a stable user experience" with...
Source: https://www.gsmarena.com/flagship_sony_xperias_will_get_2_years_of_android_updates-news-29427.php